#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<string.h>
 int my_strlen(char *arr)
{
	 int count = 0;
	 while (*arr != '\0')
	 {
		
		 count++;
		 arr++;
	 }
	 return count;

}
int main()
{
	char a[] = "bcdef";
	int len = my_strlen(a);
	printf("%d", len);
	return 0;
} 